<!doctype html>
<meta charset=utf-8>
<script src="../testcommon.js"></script>
<style>
@keyframes translateAnim {
  to { transform: translate(100px) }
}
@keyframes marginLeftAnim {
  to { margin-left: 100px }
}
@keyframes marginLeftAnim100To200 {
  from { margin-left: 100px }
  to { margin-left: 200px }
}
</style>
<body>
<script>
'use strict';

promise_test(function(t) {
  var div = addDiv(t, { style: 'animation: translateAnim 100s' });
  var animation = div.getAnimations()[0];

  return animation.ready.then(function() {
    assert_not_equals(getComputedStyle(div).transform, 'none',
                      'transform style is animated before cancelling');
    animation.cancel();
    assert_equals(getComputedStyle(div).transform, 'none',
                  'transform style is no longer animated after cancelling');
  });
}, 'Animated style is cleared after cancelling a running CSS animation');

promise_test(function(t) {
  var div = addDiv(t, { style: 'animation: translateAnim 100s forwards' });
  var animation = div.getAnimations()[0];
  animation.finish();

  return animation.ready.then(function() {
    assert_not_equals(getComputedStyle(div).transform, 'none',
                      'transform style is filling before cancelling');
    animation.cancel();
    assert_equals(getComputedStyle(div).transform, 'none',
                  'fill style is cleared after cancelling');
  });
}, 'Animated style is cleared after cancelling a filling CSS animation');

promise_test(function(t) {
  var div = addDiv(t, { style: 'animation: translateAnim 100s' });
  var animation = div.getAnimations()[0];
  div.addEventListener('animationend', t.step_func(function() {
    assert_unreached('Got unexpected end event on cancelled animation');
  }));

  return animation.ready.then(function() {
    // Seek to just before the end then cancel
    animation.currentTime = 99.9 * 1000;
    animation.cancel();

    // Then wait a couple of frames and check that no event was dispatched
    return waitForAnimationFrames(2);
  });
}, 'Cancelled CSS animations do not dispatch events');

test(function(t) {
  var div = addDiv(t, { style: 'animation: marginLeftAnim 100s linear' });
  var animation = div.getAnimations()[0];
  animation.cancel();

  assert_equals(getComputedStyle(div).marginLeft, '0px',
                'margin-left style is not animated after cancelling');

  animation.currentTime = 50 * 1000;
  assert_equals(getComputedStyle(div).marginLeft, '50px',
                'margin-left style is updated when cancelled animation is'
                + ' seeked');
}, 'After cancelling an animation, it can still be seeked');

promise_test(function(t) {
  var div =
    addDiv(t, { style: 'animation: marginLeftAnim100To200 100s linear' });
  var animation = div.getAnimations()[0];

  return animation.ready.then(function() {
    animation.cancel();
    assert_equals(getComputedStyle(div).marginLeft, '0px',
                  'margin-left style is not animated after cancelling');
    animation.play();
    assert_equals(getComputedStyle(div).marginLeft, '100px',
                  'margin-left style is animated after re-starting animation');
    return animation.ready;
  }).then(function() {
    assert_equals(animation.playState, 'running',
                  'Animation succeeds in running after being re-started');
  });
}, 'After cancelling an animation, it can still be re-used');

test(function(t) {
  var div =
    addDiv(t, { style: 'animation: marginLeftAnim100To200 100s linear' });
  var animation = div.getAnimations()[0];
  animation.cancel();
  assert_equals(getComputedStyle(div).marginLeft, '0px',
                'margin-left style is not animated after cancelling');

  // Trigger a change to some animation properties and check that this
  // doesn't cause the animation to become live again
  div.style.animationDuration = '200s';
  flushComputedStyle(div);
  assert_equals(getComputedStyle(div).marginLeft, '0px',
                'margin-left style is still not animated after updating'
                + ' animation-duration');
  assert_equals(animation.playState, 'idle',
                'Animation is still idle after updating animation-duration');
}, 'After cancelling an animation, updating animation properties doesn\'t make'
   + ' it live again');

test(function(t) {
  var div =
    addDiv(t, { style: 'animation: marginLeftAnim100To200 100s linear' });
  var animation = div.getAnimations()[0];
  animation.cancel();
  assert_equals(getComputedStyle(div).marginLeft, '0px',
                'margin-left style is not animated after cancelling');

  // Make some changes to animation-play-state and check that the
  // animation doesn't become live again. This is because it should be
  // possible to cancel an animation from script such that all future
  // changes to style are ignored.

  // Redundant change
  div.style.animationPlayState = 'running';
  assert_equals(animation.playState, 'idle',
                'Animation is still idle after a redundant change to'
                + ' animation-play-state');

  // Pause
  div.style.animationPlayState = 'paused';
  assert_equals(animation.playState, 'idle',
                'Animation is still idle after setting'
                + ' animation-play-state: paused');

  // Play
  div.style.animationPlayState = 'running';
  assert_equals(animation.playState, 'idle',
                'Animation is still idle after re-setting'
                + ' animation-play-state: running');

}, 'After cancelling an animation, updating animation-play-state doesn\'t'
   + ' make it live again');

done();
</script>
</body>
</html>
